To cite the CompQuadForm package in publications use:

Duchesne P, de Micheaux PL (2010). “Computing the distribution of quadratic forms: Further comparisons between the Liu-Tang-Zhang approximation and exact methods.” Computational Statistics and Data Analysis, 54, 858-862.

Corresponding BibTeX entry:

  @Article{,
    title = {Computing the distribution of quadratic forms: Further
      comparisons between the Liu-Tang-Zhang approximation and exact
      methods},
    author = {P. Duchesne and P. Lafaye {de Micheaux}},
    journal = {Computational Statistics and Data Analysis},
    year = {2010},
    pages = {858-862},
    volume = {54},
  }